Taxonomy: Kingdom - Plantae (plants). Subkingdom - Tracheobionta (vascular plants). Superdivision - Spermatophyta (seed plants). Division - Magnoliophyta (Flowering plants). Class - Liliopsida. Order - Liliales. Family - Iridaceae (Iris family). Genus -Iris L. Species - Iris hartwegii Baker.
Ecology: The Sierra Iris' distinct elevational and geographic range separates it from all the other Pacifica iris except the long floral tube species Iris tenuissima in the northern Sierra Nevada Mountains and Iris macrosiphon along the Sierras' lower elevation western foothills. Grows between 600 meters to 2,100 meters elevation. Primarily endemic to California. Grows shady areas of moist, humus- rich soil. Hybridizes readily with I. macrosiphon.